Finding the Fourth Proportional to 1,223,297.43, 1,688,103.75 and 679,468.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,297.43 : 1,688,103.75 = 679,468.10 : x
2. Step 2: Convert to fraction form
   1,223,297.43/1,688,103.75 = 679,468.10/x
3. Step 3: Cross multiply
   1,223,297.43x = 1,688,103.75 × 679,468.10
4. Step 4: Simplify right side
   1,223,297.43x = 1,147,012,641,722.86
5. Step 5: Solve for x
   x = 1,147,012,641,722.86/1,223,297.43
6. Step 6: Final answer
   x = 937,640.04